source: trunk/EventBenchConsole/src/de/ugoe/cs/eventbench/jfc/commands/CMDpreprocessDirJFC.java @ 420

package de.ugoe.cs.eventbench.jfc.commands;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.security.InvalidParameterException;
import java.util.List;

import de.ugoe.cs.util.console.Command;
import de.ugoe.cs.util.console.Console;

/**
 * <p>
 * Command to pre-process files written by EventBench's JFCMonitor located in a
 * directory. The only task of the pre-processing is checking if the session was
 * closed properly, i.e., if the XML file ends with a {@code </sessions>} tag.
 * If this is not the case, the tag will be appended to the file.
 * </p>
 * 
 * @author Steffen Herbold
 * @version 1.0
 */
public class CMDpreprocessDirJFC implements Command {

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.util.console.Command#run(java.util.List)
         */
        @Override
        public void run(List<Object> parameters) {
                String sourcePath;
                String targetPath;
                try {
                        sourcePath = (String) parameters.get(0);
                        targetPath = (String) parameters.get(1);
                } catch (Exception e) {
                        throw new InvalidParameterException();
                }

                File sourceFolder = new File(sourcePath);
                if (!sourceFolder.isDirectory()) {
                        Console.printerrln(sourcePath + " is not a directory");
                }
                String absolutPathSource = sourceFolder.getAbsolutePath();
                File targetFolder = new File(targetPath);
                if (!targetFolder.isDirectory()) {
                        Console.printerrln(targetPath + " is not a directory");
                }
                String absolutPathTarget = targetFolder.getAbsolutePath();

                for (String filename : sourceFolder.list()) {
                        String source = absolutPathSource + "/" + filename;
                        Console.traceln("Preprocessing file: " + source);
                        File file = new File(source);
                        InputStreamReader reader;
                        try {
                                FileInputStream fis = new FileInputStream(file);
                                reader = new InputStreamReader(fis, "UTF-16");
                        } catch (FileNotFoundException e) {
                                Console.printerrln(e.getMessage());
                                return;
                        } catch (UnsupportedEncodingException e) {
                                Console.printerrln(e.getMessage());
                                return;
                        }
                        char[] buffer = new char[(int) file.length()];
                        try {
                                reader.read(buffer);
                                reader.close();
                        } catch (IOException e) {
                                Console.printerrln(e.getMessage());
                                return;
                        }

                        String content = new String(buffer).trim();

                        int index = filename.lastIndexOf('.');
                        String target = absolutPathTarget + "/"
                                        + filename.substring(0, index) + ".xml";

                        Console.traceln("   Saving as: " + target);

                        OutputStreamWriter writer;
                        try {
                                FileOutputStream fos = new FileOutputStream(target);
                                writer = new OutputStreamWriter(fos, "UTF-8");
                        } catch (IOException e) {
                                Console.printerrln(e.getMessage());
                                return;
                        }
                        try {
                                writer.write(content);
                                if (!content.endsWith("</sessions>")) {
                                        writer.write("</sessions>");
                                }
                                writer.close();
                        } catch (IOException e) {
                                Console.printerrln(e.getMessage());
                        }
                }
        }

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.util.console.Command#help()
         */
        @Override
        public void help() {
                Console.println("Usage: preprocessDirJFC <sourcePath> <targetPath>");
        }

}